Project 1- Building a Master TCL/TK Macro

It defines several procedures (Normals, cleanup_tool, free&t_edges, Reflect_entities) that are triggered when the corresponding buttons are clicked.

Here's a breakdown of the code:

1. The first few lines set up the main window ($master) for the GUI.

2. The Normals procedure defines a sub-window ($normals) that provides options related to displaying and reversing normals of selected elements.

3. The cleanup_tool procedure defines a sub-window ($top) that contains various buttons for performing cleanup operations on the model, such as deleting entities, reordering components, and renumbering entities.

4. The free&t_edges procedure defines a sub-window ($top) for working with free edges and T-edges in the model.

5. The Reflect_entities procedure defines a sub-window ($top) for reflecting entities in the model. It includes options for OptiStruct and Radioss solvers.